| 摘要: |
| 随着我国电力系统的发展,配电网线路已经完成了多地域全覆盖,这其中必须承受广域多环境的不利影响,其中覆冰问题带来的负面影响尤为严重。 使用疏水性涂层可以有效地预防配电网线路产生覆冰,与传统的机械、热力除冰法相比更节约人力和物力。 因此,适用于线路的疏水涂层是现阶段改善配电网覆冰问题的研究重点。 通过引入聚二甲基硅氧烷(PDMS)和 SiO2 成分到环氧树脂中,成功制备了接触角大于 145°的涂层,不仅显著优化了环氧涂层疏水性能,而且适用于铝绞线表面涂装。 通过模拟低温和滴水自然覆冰条件,对比分析了涂覆不同疏水性能导线样品的表面覆冰质量、厚度及形貌等数据。 结果表明,在-5 ℃时,涂覆添加有 PDMS 和 SiO2 的环氧树脂涂层导线覆冰质量与原始导线相比降低了 66. 8%;如此的疏水涂层能够改变导线结冰的形貌,使总覆冰中冰挂质量的比例提升 4% ~ 6%,集中在导线下侧的冰挂更有利于配合机械法和热力融冰法进行清除。 |
| 关键词: 配电网 覆冰 疏水性 涂层 防结冰 |
| DOI：10.11933/j.issn.1007-9289.20210127002 |
| 分类号:TQ631 |
| 基金项目:国家自然科学基金(52075458)和四川省科技厅重点研发(2019YFG0292)资助项目 |
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| Construction and Analysis of Anti-icing Coating for Distribution Lines |
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Li Chaoyi1, Song Shijie1, Cai Meng2, He Jifan2, Fan Xiaoqiang1,2, Peng Jinfang3, Zhu Hao1,2
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1.School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031 , China;2.School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031 , China;3.Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031 , China
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| Abstract: |
| With the development of China's power system, distribution network lines have completed the full coverage of the multi- regions and would suffer from various influence in a complex environment, especially the negative impact of icing. Compared with the traditional mechanical and thermal deicing methods, the use of hydrophobic coating can effectively prevent the distribution network lines from icing, which can save manpower and material resources. Therefore, the hydrophobic coating is the hot spot of the current research on improving the distribution network icing problem. The coating with contact angle of ＞ 145 ° was successfully prepared via the introduction of PDMS and SiO2 into epoxy resin, which not only improved the hydrophobic property, but also easily applied to the surface coating of aluminum stranded wire. The natural icing conditions were simulated by low temperature and dripping water in an environmental simulation test box, and the surface icing mass, thickness and morphology of wire samples with different hydrophobicity have done a contrastive analysis. The results show that the icing mass of the wire coated with PDMS-SiO2 -containing epoxy resin reduces by 66. 8% at -5 ℃ , with the original wire as a comparison. Meanwhile, the hydrophobic coating can change the morphology of wire icing, and increase the mass proportion of icicle by 4~ 6% in the total icing. The icicle accumulated on the lower side of the wire is more conducive to be removed by mechanical method and thermal ice melting method. |
| Key words: distribution network icing hydrophobicity coating anti-icing |
